Join A List Of Tuples

My code looks the following: from itertools import groupby for key, group in groupby(warnstufe2, lambda x: x[0]): for element in group: a = element[1:4] b = e

Solution 1:

Use itertools.chain() and list unpacking:

>>> items = [[('a','b','c'),('d','e','f')], [('g','h','i'),('j','k','l')]]
>>>
>>> list(chain(*items))
[('a', 'b', 'c'), ('d', 'e', 'f'), ('g', 'h', 'i'), ('j', 'k', 'l')]

Solution 2:

Try This

from itertools import groupby

result= []
for key, groupin groupby(warnstufe2, lambda x: x[0]):
    for element ingroup:
        a = element[1:4]
        b = element[4:12]
        c = [a,b]
        result.append(c)

print (result)